| PartNumber | R1173H251D-T1-FE | R1173H251B-T1-FE | R1173H221D-T1-FE |
| Description | LDO Voltage Regulators Low voltage LDO Regulator | LDO Voltage Regulators 1A Voltage Regulator (LDO Regulator) | LDO Voltage Regulators 1A Voltage Regulator (LDO Regulator) |
| Manufacturer | Ricoh Electronics | Ricoh Electronics | Ricoh Electronics |
| Product Category | LDO Voltage Regulators | LDO Voltage Regulators | LDO Voltage Regulators |
| RoHS | Y | Y | Y |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | SOT-89-5 | SOT-89-5 | SOT-89-5 |
| Output Voltage | 2.5 V | 2.5 V | - |
| Output Current | 1 A | 1 A | - |
| Number of Outputs | 1 Output | 1 Output | - |
| Input Voltage MAX | 6 V | 6 V | - |
| Input Voltage MIN | 1.4 V | 1.4 V | - |
| Output Type | Fixed | Fixed | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Dropout Voltage | 320 mV | 320 mV | - |
| Series | R1173H | R1173H | - |
| Packaging | Reel | Reel | Reel |
| Product | LDO Regulators | LDO Voltage Regulators | - |
| Type | CMOS LDO Regulator | CMOS LDO Regulator | - |
| Brand | Ricoh Electronic Devices Company | Ricoh Electronic Devices Company | Ricoh Electronic Devices Company |
| Output Voltage Range | - | - | - |
| PSRR / Ripple Rejection Typ | 70 dB | 70 dB | - |
| Voltage Regulation Accuracy | 2 % | 2 % | - |
| Line Regulation | 0.05 % / V | 0.05 %/V | - |
| Load Regulation | - 3 mV | - 3 mV | - |
| Operating Supply Current | 60 uA | 60 uA | - |
| Pd Power Dissipation | 900 mW | 900 mW | - |
| Product Type | LDO Voltage Regulators | LDO Voltage Regulators | LDO Voltage Regulators |
| Factory Pack Quantity | 1000 | 1000 | 1000 |
| Subcategory | PMIC - Power Management ICs | PMIC - Power Management ICs | PMIC - Power Management ICs |